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15. Navigation Sensors
15-14
15.7 Gyro Error Correction
Typical gyro error sources are installation error, speed/latitude error and dynamic settling error. Typically you detect
gyro error on a user chart superimposed on the TT picture, on Tracked Targets drawn on the chart radar display or
on radar drawn on the chart radar display.
Gyro error correction
is used to remove the difference between the chart north and the gyro north.
Gyro error can be corrected totally or partially in the gyro compass system itself. Many gyro compass systems have
automatic speed/latitude corrector, which may use automatic or manual input for speed and latitude. Some
gyrocompass systems also include correction for dynamic settling error.
Automatic gyro error correction based on tabled speed/latitude correction can be used, if the gyrocompass itself does
not make any corresponding correction.
Gyro error compensation can be used to:
•
Correct user chart on Radar screen
•
Correct Tracked Target positions on chart radar display
•
Correct radar drawn on chart radar display
•
Compensate courses used in route monitoring and automatic route steering.
If you have enabled Gyro error correction (see the next
page) and if this correction has modified the value of the
own ship heading, then this condition is always visible
in the information area. Red "(corr)" means the gyro
value has been corrected.
HDG
071.0
°
SPD (WAT)
15.6 kn
SB
(POSN) 0.0 kn
COG (POSN) 071.0
°
SOG (POSN) 15.6 kn
59
°
31.206’N
024
°
36.731’E
WGS 84
DGPS
If you have enabled both Gyro error correction from
ship parameters and Gyro error compensation from route
parameters, then Plan and Next
in the information area
display show compensated values, as shown in the
example at right. Also, course to steer (used by
automatic route steering) is compensated in this case.
kn
NM
NM
The current value of gyro correction and its method are
displayed in the Other page of the Sensors dialog box as
shown in the example at right. "Table" means
speed/latitude table is the source for gyro correction;
"Manual" indicates manual entry of gyro correction.
POSN
Содержание FCR-2107 series
Страница 42: ...1 Operational Overview 1 20 This page intentionally left blank...
Страница 73: ...2 Radar Operation 2 31 ROUGH SEA SHIP HARBOR COAST Picture setup options and default settings con t...
Страница 154: ...5 AIS Operation 5 28 This page intentionally left blank...
Страница 253: ...7 Vector Chart Material 7 81 More information is available in text More information is available as a picture...
Страница 255: ...7 Vector Chart Material 7 83 Recommended track defined by two beacons...
Страница 256: ...7 Vector Chart Material 7 84 Recommended track defined by a building and a beacon...
Страница 257: ...7 Vector Chart Material 7 85 Measurement mile tails tails...
Страница 279: ...8 Manual Updates 8 19 12 10 11 9 13 7 8 Set positions with cursor and push left mouse button Click Accept button...
Страница 298: ...9 Chart Alerts 9 14 This page intentionally left blank...
Страница 322: ...10 Route Planning 10 24 This page intentionally left blank...
Страница 368: ...14 Backup Operations 14 6 This page intentionally left blank...
Страница 404: ...16 Recording Functions 16 16 This page intentionally left blank...
Страница 406: ...17 NAVTEX Messages 17 2 This page intentionally left blank...
Страница 416: ...19 Parameters Setup 19 8 This page intentionally left blank...
Страница 456: ...Appendix 2 IHO ECDIS Chart 1 AP 4 Information about the chart display 1 Information about the chart display 2...
Страница 457: ...Appendix 2 IHO ECDIS Chart 1 AP 5 Nature and Man made features Port features...
Страница 458: ...Appendix 2 IHO ECDIS Chart 1 AP 6 Depths Currents etc Seabed Obstructions Pipelines etc...
Страница 459: ...Appendix 2 IHO ECDIS Chart 1 AP 7 Traffic routes Special areas...
Страница 460: ...Appendix 2 IHO ECDIS Chart 1 AP 8 Aids and Services Buoys and Beacons...
Страница 461: ...Appendix 2 IHO ECDIS Chart 1 AP 9 Topmarks Color test diagram...
Страница 462: ...Appendix 2 IHO ECDIS Chart 1 AP 10 Mariners navigational symbols...
Страница 464: ...Appendix 3 Interpreting S57 Charts AP 12 Plain or symbolized boundaries Limited or full light sectors...
Страница 467: ...Appendix 3 Interpreting S57 Charts AP 15 Land features Water and seabed features Traffic routes...
Страница 468: ...Appendix 3 Interpreting S57 Charts AP 16 Cautionary areas Information areas Buoys and beacons Lights...
Страница 469: ...Appendix 3 Interpreting S57 Charts AP 17 Fog signals Radars Services...
Страница 472: ...Appendix 3 Interpreting S57 Charts AP 20 Low accuracy Services and small craft facilities Special areas...
Страница 474: ...Appendix 3 Interpreting S57 Charts AP 22 Light descriptions Nature of seabed Geographic names etc...
Страница 476: ...Appendix 3 Interpreting S57 Charts AP 24 This page intentionally left blank...
Страница 511: ...Appendix 5 Digital Interface AP 59 NRX NAVTEX received data...
Страница 544: ...Appendix 6 Parts List and Parts Location AP 92 This page intentionally left blank...
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